Finding the Fourth Proportional to 13,071.08, 18,036.06 and 7,765.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,071.08 : 18,036.06 = 7,765.76 : x
2. Step 2: Convert to fraction form
   13,071.08/18,036.06 = 7,765.76/x
3. Step 3: Cross multiply
   13,071.08x = 18,036.06 × 7,765.76
4. Step 4: Simplify right side
   13,071.08x = 140,063,713.31
5. Step 5: Solve for x
   x = 140,063,713.31/13,071.08
6. Step 6: Final answer
   x = 10,715.54